I've found a few instances where people have used CNC cutters with a diamond drag bit to help score the glass, and a few industrial glass cutting applications of similar to stained glass size items, but no real start to finish projects.
This is an interesting industrial example as they were able to produce a stained glass piece that is made almost entirely from curved pieces (a near impossibility with traditional scoring and breaking) - https://semyx.com/solutions/waterjet-applications/glass/
Industrial waterjet glass cutting: https://www.youtube.com/watch?v=a_qMKKwvzz8
I was a little surprised when I read this because it means the people at my local makerspace are magicians. There are tons of examples of curved stained glass as well as a lot of howtos on how to do it. The came glasswork page on wikipedia is full of stained glass with curves: https://en.wikipedia.org/wiki/Came_glasswork
What am I missing?
That said, I can see how a CNC approach could help with the speed of the process; shallow/simple curves are easy enough to do reliably, but deeper, more complex, and significantly concave curves require additional effort and planning, potentially a lot of manual work with grozing pilers to break out a concavity, and additional grinding to finish out the shape.
So being able to turn a machine process to some of those cuts would save a lot of manual effort and potentially get you right up to the final polish-grind stage in one go, which certainly sounds attractive for some kinds of design.
But easy-looking is also a product of writing it up after the fact, and learning under good instruction; it was still a solid 20+ hours of work with a fair amount of cursing and bits of messing up and redoing stuff.
In any case, whether or not I caught on quicker than average, the process itself feels very accessible to me. I can recommend giving it a shot a lot more readily than I'd have guessed before I tried it myself.
The grinder I used is a pretty simple unit with a water reservoir tray under the grill that keeps the bit wet via a sponge feeder; probably about $100 new, used bargains if you go looking, but, yeah, water feed of some sort is key to the grinding working well on glass.
The material is absolutely amazing and we still don’t know everything about it.
(See readme for a rendering)